JP2019028507A - Event management system - Google Patents

Abstract

To provide an event management system which can automatically and efficiently manage progress of an event, by giving contents such as a map, points and reward to a participant, according to a current position of the participant, a subject solution stage, etc.SOLUTION: An event management system performs visible light communication between each event spot identified by ID information and a portable terminal 4 of a participant, gives contents such as a map, a subject, points and reward to the participant, according to a current position of the participant, a situation, a state, a subject solution stage, etc., and manages events such as a treasure hunting event, a point rally event. A visible light transmitter 1 is installed at any event spot. An ID information storage unit 8 which stores the ID information, and a light projection unit 2 which projects visible light obtained by superposing the ID information are prepared in the visible light transmitter 1. The participant of the event photographs the visible light projected from the light projection unit 2 of the visible light transmitter 1, by the camera 10 of the portable terminal 4.SELECTED DRAWING: Figure 1

Description

  The present invention provides information to participants who participate in various events such as treasure hunting events, point rally events, orienteering on the network, and maps, issues, The present invention relates to an event management system that provides participants with content information such as hints and manages the progress of various events.

  Conventionally, the point rally system is proposed by the following patent document 1. In this point rally system, guide map display panels are installed at tourist sites in various places, and infrared communication units are attached to the display panels. Using the communication function, coupon images and point images are displayed on the guide map display panels installed at each sightseeing spot, and coupons and point information are provided to participants' mobile phones via infrared communication. To do.

  However, the point rally system simply sends coupons and point information from each guide map display panel to the participant's mobile phone. For example, as in the treasure hunt event, the participant's current location and each event It is difficult to quickly and appropriately give each participant content information such as a map, a task, a hint, a point, and a reward according to the location, time, ranking, or stage (problem solving stage).

  On the other hand, Patent Document 2 below proposes a digital signage system used in a point rally. In this digital signage system, digital signage with a camera is installed at each point where points are given to participants. Register as data for authentication.

  Participants participating in the point rally, when they visit the digital signage installed at each point, take a photo of the participant's face with the digital signage camera, and based on that image data, It is configured to perform authentication and to give the participant points based on the authentication.

JP 2011-100430 A JP 2013-41416 A

  In the point management system using the above digital signage, when a participant visits the digital signage installed at each point location, the participant's face photo will be taken with the camera installed in the digital signage. Since participants' face photos are automatically taken, it is often difficult to authenticate participants from face photo images, such as when the shooting conditions are poor due to brightness, or when multiple faces are taken. .

  In addition, as described above, the participant needs to take a face photograph together with personal information in advance and register the image data as data for participant authentication. There is a defect that work is forced and participation is easy to be avoided. The digital signage system simply gives a visit point to a participant who has visited each point point, and only the points of the participants in the system are stored at the end of the point rally.

  For this reason, when the digital signage system is applied to, for example, a treasure hunting event, an orienteering event, etc., if the participant is to acquire the acquired content as a reward for the point reached by the participant in the event, In accordance with the current position (arrival point), time, ranking, or stage (problem solving stage) of the person, it is necessary to appropriately provide each participant with the acquired content information of the reward such as the problem, hint, and point.

  However, since the above digital signage system simply gives a visit point to a participant who is authenticated from a face photo, depending on the point where the participant has reached, such as a treasure hunt event, an orienteering event, It is difficult for a participant to acquire rewards such as hints and points as acquired contents.

  The present invention has been made in view of the above points, and content information such as maps, hints, points, etc. is given to participants according to the current position of the participant, the problem solving stage, etc., and the progress of the event An object of the present invention is to provide an event management system that can automatically and efficiently manage the event.

The event management system according to the present invention includes:
Visible light communication is performed between each event point identified by the ID information and the participant's mobile terminal, and according to the ID information of the event point and the status information of the participant, a map, an assignment, a hint, a point, a reward Is an event management system that manages the progress of events such as treasure hunting events and point rally events by giving content information such as
An ID information storage unit that stores the ID information, and a light projecting unit that projects visible light on which the ID information is superimposed, and a visible light transmitting unit installed at an arbitrary event point;
Provided in the portable terminal carried by the event participant, has a pixel amplifier sequential output type image sensor, and shoots the visible light projected from the visible light transmission means by the pixel amplifier sequential output type image sensor. Camera to
Demodulating means for capturing striped pattern image data obtained from an imaging signal output from the pixel amplifier sequential output type imaging device, and demodulating the ID information superimposed on the visible light based on the image data;
Provided in a server connected to the network, information related to events such as treasure hunting events and point rally events, information related to participants participating in the event, maps to be given to participants, content assigned such as assignments, hints, points, A content database for storing content information including acquired content such as rewards;
Server access means for accessing the server from the mobile terminal when the demodulating means demodulates the ID information, and transmitting the ID information of the event point demodulated by the demodulating means and status information of the participants;
When the server access means accesses the server, based on the ID information of the event point and the status information of the participant, the content to be given to the participant of the event, such as a map, assignments, hints, points, Content reading means for reading content information including acquired content such as rewards from the content database;
Content giving means for sending the content information read from the content database by the content reading means from the server to the participant's mobile terminal and giving the content information to each participant;
It is provided with.

  Here, the status information of the participant can include information such as the participant's current position, situation, state, and problem solving stage, in addition to the identification code attached to the participant itself. Further, examples of the content information include maps, assignment contents such as assignments, hints, points, acquired contents such as rewards, confirmation messages, and the like.

  Also, the ID information of the event point may be unique or non-unique, and the ID information may be static data or dynamic data. The ID information may be a fixed length or a variable length, and the visible light transmitting means may transmit the same ID information at a plurality of event points.

  When the event management system performs a treasure hunt event as an event, for example, the participant reaches each event point, and the visible light emitted from the light projecting unit of the visible light transmitting unit at the event point is used by using the camera of the mobile terminal. When photographing the light, the camera captures the striped pattern image data obtained from the imaging signal into the demodulating means, and the demodulating means demodulates the ID information superimposed on the visible light based on the image data, and Take out the ID information.

  When the mobile terminal acquires the ID information of the event point, the server access means of the mobile terminal accesses the server using it as a trigger, and transmits the ID information of the event point and the status information of the participant to the server.

  When the server takes in the ID information of the event point together with the status information of the participant from the mobile terminal, the content reading means gives the map to the participant based on the ID information of the event point and the status information of the participant. And the like, or acquired contents such as hints, points, and rewards are read from the content database.

  The content granting means transmits the content information read from the content database to the participant's mobile terminal from the server, and gives the participant content such as a map, assignments, or acquired content such as hints, points, rewards, etc. Of content information.

  For example, when a map or assignment is received and displayed on the mobile terminal, the participant proceeds to the next event point according to the map. Alternatively, for example, when an assignment is displayed, the participant considers the answer and answers, operates the mobile terminal, and transmits the answer to the server. The server that has received the answer determines whether the answer is correct. If the answer is correct, the server transmits to the mobile terminal acquired content such as hints, points, and rewards corresponding to the answer.

  As described above, according to the event management system, the participant who uses the mobile terminal is in accordance with the ID information of the event point and the status information of the participant, that is, the current position, situation, state, and problem solving of the participant. Depending on the stage, etc., content such as maps and assignments, or content such as hints, points, and rewards can be automatically assigned from the server through the mobile terminal, and participants can send it to the mobile terminal. You can enjoy treasure hunting and other events while viewing content information such as maps and hints.

  Also, even for large-scale events with many participants and many event points, content information such as appropriate maps, hints, points, and rewards according to each participant and event point can be appropriately and efficiently Can be given to participants to manage and implement the progress of large-scale events.

Another event management system is
Visible light communication is performed between each event point identified by the ID information and the participant's mobile terminal, and according to the ID information of the event point and the status information of the participant, a map, an assignment, a hint, a point, a reward Is an event management system that manages the progress of events such as treasure hunting events and point rally events by giving content information such as
An ID information storage unit that stores the ID information and a light projecting unit that projects visible light on which the ID information is superimposed; a visible light transmitting unit that is installed at an arbitrary event point;
A visible light receiver connected to the portable terminal carried by a participant of the event and having a light receiving unit that receives visible light projected from the light projecting means of the visible light transmitting means;
A demodulating means provided in the portable terminal, for taking in a received light signal output from the visible light receiver and demodulating the ID information superimposed on the visible light from the received light signal;
Provided in a server connected to the network, information related to events such as treasure hunting events and point rally events, information related to participants participating in the event, maps to be given to participants, content assigned such as assignments, hints, points, A content database for storing content information including acquired content such as rewards;
When the visible light receiver receives visible light, the received light signal is captured by the portable terminal, and the ID information is demodulated by the demodulation means, the server is accessed from the portable terminal, and the event point Server access means for transmitting the ID information and the status information of the participants;
When the server access means accesses the server, based on the ID information of the event point and the status information of the participant, the content to be given to the participant of the event, such as a map, assignments, hints, points, Content reading means for reading content information including acquired content such as rewards from the content database;
Content giving means for sending the content information read from the content database by the content reading means from the server to the participant's mobile terminal and giving the content information to each participant;
It is provided with.

  In this event management system, when a participant arrives at each event point, the participant holds up the visible light receiver connected to the portable terminal to the visible light projected from the light projecting means of the visible light transmitting means installed there. The projected visible light is received by the light receiving unit of the visible light receiver. The portable terminal receives the light reception signal output from the visible light receiver, demodulates the information signal superimposed on the visible light from the light reception signal, and acquires ID information.

  At this time, using that as a trigger, the server access means of the mobile terminal accesses the server based on the ID information, and the mobile terminal transmits the ID information and the status information of the participant to the server. When the server acquires the ID information of the event point together with the status information from the participant's mobile terminal, the content to be given to the participant at the participant's mobile terminal, such as a map, assignments, or hints, points, Content information including acquired content such as rewards is transmitted.

  Also in this event management system, as described above, participants who use the mobile terminal are in accordance with the ID information of the event point and the status information of the participant, that is, the current position, status, state, and problem solving stage of the participant. Depending on the content, content information such as maps, hints, points, rewards, etc. can be automatically given from the server through the mobile terminal, and the participants can send content such as maps and hints sent to the mobile terminal. While watching, you can enjoy treasure hunt and other events.

  Even for large-scale events with many participants and many event points, appropriate maps, hints, points, rewards, etc. according to each participant and event point can be appropriately and efficiently sent to the participants. Can grant and manage and implement the progress of large-scale events.

  Here, in the event management system, content generation means for generating content information not registered in the content database can be provided in the server. The content generation means generates content information using a predetermined algorithm based on the status information of the participant, the answer of the participant, the ID information of the event point, and the like, and assigns the content information to the participant.

  Here, the light projecting means of the visible light transmitting means can be composed of a lighting fixture for outdoor lighting or indoor lighting, or a lighting fixture built in a vending machine. Further, the light projecting means can be constituted by a display device using liquid crystal or organic EL.

  Here, it is possible to provide a database updating means for updating the contents of the content database, and the database updating means can be configured to update the content in the content database based on the status information of the participants.

  In addition to the treasure hunting event, the event management system can be applied to a point rally event in which a participant visits various places to collect points, or an orienteering event in which each point is searched and walked.

  According to the event management system of the present invention, visible light communication is performed between each event point identified by the ID information and the participant's mobile terminal, and the participant's current position, situation, state, problem solving stage, etc. In response, content information such as maps, assignments, hints, points, rewards, etc. can be automatically given to participants, and the progress of the event can be managed efficiently.

It is a block diagram of the event management system which shows one Embodiment of this invention. It is a perspective view of a visible light transmitter. It is a block block diagram of a visible light transmitter. It is a block block diagram of the portable terminal which incorporated the camera. It is explanatory drawing which shows the charge accumulation timing in each pixel of the image pick-up element of a camera, and the signal output timing of each pixel. It is explanatory drawing of the image which converted the image signal of the image pick-up element into the gray scale, converted into the monochrome image signal, extracted the luminance component, and produced the striped pattern. It is a timing chart of each graph of the exposure period, transmission signal, exposure amount, and differential value of the pixels in each row. It is explanatory drawing of the treasure hunt event of embodiment. It is a flowchart which shows the outline of a server registration process. It is a flowchart of the visible light reception process by a portable terminal. It is a flowchart which shows the outline | summary of operation | movement of a server and a portable terminal. It is a block block diagram of the visible light receiver and portable terminal of other embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, this event management system performs visible light communication between each event point identified by the ID information and the participant's mobile terminal 4, and the participant's current position, situation, state, and problem Depending on the resolution stage, etc., content such as maps, assignments, etc., and content information including hints, points, rewards, etc. will be given to participants to manage events such as treasure hunting events and point rally events. Do.

  As shown in FIG. 1, the event management system includes an ID information storage unit that stores ID information and a light projecting unit (light projecting unit) 2 that projects visible light on which the ID information is superimposed. A visible light transmitter (visible light transmitting means) 1 installed at a point and a portable terminal 4 carried by an event participant, and having a pixel amplifier sequential output type imaging device, from the visible light transmitting means And a camera 10 that captures the projected visible light with a pixel amplifier sequential output type imaging device 15.

  The camera 10 generates striped pattern image data obtained from the imaging signal output from the pixel amplifier sequential output type imaging device 15. The portable terminal 4 includes a demodulating unit that captures the image data in units of frames and demodulates an information signal superimposed on visible light based on the image data. The camera 10 having the pixel amplifier sequential output type imaging device 15 captures the projected visible light by a so-called rolling shutter system, and from the image data obtained from the imaging signal, an information signal superimposed on the visible light ( ID information) is extracted.

  Further, the event management system includes a server 20 connected to the Internet INT. The server 20 takes in the ID information transmitted from the mobile terminal 4 through the mobile phone communication network and the Internet INT, and gives the mobile terminal 4 a map, assignment content such as a problem, and a hint according to the ID information. Content information including acquired content such as points and rewards is transmitted. The demodulating means of the portable terminal 4 includes image processing executed by the microprocessor 58. As shown in FIG. 1, the mobile terminal 4 is connected to perform data communication and voice communication with each base station BS of the mobile phone communication network, and each base station BS is connected to the Internet INT.

  The mobile terminal 4 is a terminal device such as a mobile phone equipped with a camera (digital camera) 10. In the camera mode of the mobile terminal 4, a function switch or the like is operated and the visible light projected from the visible light transmitter 1 is displayed. Take a still image or movie of light. The portable terminal 4 shoots the visible light projected and transmitted from the visible light transmitter 1 and captures the ID information or the like superimposed on the visible light when the still image or moving image is taken.

  As shown in FIG. 4, the camera 10 of the portable terminal 4 is provided with an imaging lens 10 a at its light incident portion, an iris 10 b having a diaphragm function inside the lens 10 a, and an iris (iris). An imaging element 15 is disposed inside the diaphragm mechanism) 10b, and allows visible light of an image taken through the lens 10a and the iris 10b to enter. The iris 10b can be a diaphragm mechanism in place of the ND filter (a neutral density filter).

  In addition, a light diffusion filter can be disposed in front of the lens 10a. In this case, even if the light projecting unit 2 of the visible light transmitter 1 that projects diffuse light of the subject and projects the visible light is a lighting fixture such as a spotlight, The light source image does not fly out. Furthermore, light from the subject can be diffused by the light diffusion filter and incident on the camera 10, and visible light can be photographed in a state of being blurred by the diffused light. Extraction of a striped pattern from a captured image is facilitated without adverse effects (noise).

  As the image pickup device 15 of the camera 10, a pixel amplifier sequential output type image pickup device 15 that amplifies electric charges generated in each pixel by each pixel amplifier and outputs an image pickup signal in order from each pixel amplifier is built in the mobile terminal 4. Is done. For example, a CMOS image sensor is used for the pixel amplifier sequential output type imaging device 15, and the CMOS image sensor amplifies electric charges generated in each pixel by each pixel amplifier and sequentially outputs an imaging signal from each pixel amplifier. . As shown in FIG. 4, the pixel amplifier sequential output type imaging device 15 is provided with a row scanning device 16 that scans in the row direction and a column scanning device 17 that scans in the column direction as scanning devices.

  A pixel amplifier sequential output type imaging device 15 composed of a CMOS image sensor has a large number of pixels arranged in a matrix. Each pixel has a light receiving element and a capacitor unit that accumulates the charge generated in the light receiving element, and according to the switching operation of the changeover switch, the charge generated during exposure and the output of the pixel signal based on the accumulated charge It works to switch.

  The image sensor 15 is provided with a shutter signal line for each row of pixels so that charges are accumulated at the same accumulation timing in the pixels in the same row, and the pixels in each row are based on signals from the shutter signal lines. However, charge accumulation is performed at the same timing for each row. Each row of pixels performs charge accumulation, that is, exposure operation at a timing shifted in order for each row, and the output of signals after charge accumulation outputs signals based on charges in order from the pixels in the row where charges are accumulated. Pixel signals are sequentially output from the pixels. A pixel amplifier is provided on the output side of each pixel.

  The column scanning device 17 of the image sensor 15 is configured by connecting a column selection switch connected to the output side of each vertical signal line to one horizontal signal line, and in the column direction by ON / OFF control of each column selection switch. A vertical signal line is selected, and a signal based on the load is output from a pixel of each vertical signal line through one horizontal signal line.

  The row scanning device 16 of the image sensor 15 is provided with a shutter signal line along each row of pixels, and each pixel in the same row is based on a signal from this shutter signal line when the camera is operated. Charges are accumulated simultaneously at the exposure timing. The output signal from the pixel is connected to be output based on the changeover operation of the changeover switch and the operation of the pixel selection switch after the charge is accumulated. Pixel signals are sequentially output from all the pixels of the matrix.

  With such a configuration of the image sensor 15, when the shutter of the camera 10 is turned on and the projected visible light is captured, the pixel amplifier sequential output type image sensor 15 is configured so that each pixel in each row has the same row. The pixels accumulate charges at the same timing. After the charges are accumulated, the signals based on the accumulated charges are sequentially output from all the pixels, amplified by the pixel amplifier, and then the switching operation and column selection switch switching. Based on the operation, the signal is transmitted to the vertical signal line and output through the horizontal signal line.

  As described above, the image sensor 15 performs exposure by sequentially shifting the exposure timing for each row. For example, the exposure timings of the pixels in the second row and the third row from the top row are sequentially shifted. The time for capturing the frame image signal is set to the frame rate of the camera (for example, 1/30 seconds to 1/60 seconds). Visible light projected from the visible light transmitter 1 is superimposed as transmission data that is OOK-modulated (on-off keying modulation), that is, a transmission pulse signal of ID information, and temporal brightness and darkness are generated according to the transmission pulse signal. Therefore, the signal output from the pixels of each matrix in one frame includes transmission data superimposed on visible light as a transmission pulse signal at the time when the pixels in one frame are exposed.

  The transmission pulse signal that is OOK-modulated and superimposed on the visible light has a time of one sample, for example, about 0.5 ms, and the imaging element 15 captures the change in brightness of the visible light including the transmission pulse signal as a stripe pattern. Occurs in the image. As a result, when the visible light projected from the visible light transmitter 1 is captured by the imaging device 15, a striped pattern including an information signal is captured in one frame, and the image signal is transmitted to the portable terminal 4 through the scanning device. Is done.

  When the camera 10 incorporated in the portable terminal 4 incorporates a pixel amplifier sequential output type imaging device (for example, CMOS image sensor) 15 and the number of pixels is, for example, 12 million pixels, the pixels are, for example, 3000 rows × 4000 columns. Are arranged and constitute one frame. Since the time to capture a signal from each pixel of one frame of the image sensor 15 is the frame rate of the camera 10, for example, when shooting at a frame rate of 1/30 seconds, the time of one frame is about 33 milliseconds and is visible Since the 1 bps time of the information signal for visible light communication based on the optical communication standard is about 0.25 msec, by processing each row as one sample, the information signal of a plurality of samples can be extracted by photographing one frame. This is possible in the shooting process of the camera 10.

  Further, in the mobile terminal 4, the color image signal captured and output by the camera 10 is subjected to gray scale conversion, converted into a monochrome image signal, and a luminance component is extracted. As a result, a striped pattern as shown in FIG. 6 is generated. In addition, about the color image signal imaged and output with the camera 10, a luminance component can also be extracted for every color signal.

  Further, in the image sensor 15 of the camera 10, shutter signal lines are usually arranged along the pixel row direction (horizontal horizontal direction), and charge accumulation, that is, the charge accumulation at the timing shifted sequentially for each pixel in each row. Although the exposure operation is performed, the shutter signal lines can be arranged along the column direction (vertical direction) of the pixels, and the charges can be accumulated simultaneously at the timing of the pixels in each column and sequentially for each column. In this case, a striped pattern including an information signal captured and transmitted in one frame of a captured image is generated in the pixel column direction.

  That is, when charge accumulation is performed at the same time for the pixels in each row and at a timing shifted in order for each row, a striped pattern (horizontal striped pattern) along the row direction is generated in the captured image. When charge accumulation is performed at the timing shifted in sequence for each column, a striped pattern (vertical striped pattern) along the column direction occurs in the captured image, but since the striped pattern includes transmitted transmission data, Data transmitted based on the striped pattern will be extracted.

  As shown in FIG. 4, the camera 10 that captures visible light includes an AD converter 18 and an image processing LSI 19. The image signal is converted into a digital signal through the AD converter 18, and the digital signal is captured by the image processing LSI 19. It is configured to perform processing.

  When the image processing LSI 19 takes in an image digital signal including color information and luminance information, the image processing LSI 19 extracts only the luminance information and converts it into, for example, grayscale data of 0 to 255 gradations, and extracts the luminance component of the signal, that is, the striped pattern component Then, the extracted data is sent to the microprocessor 58 as shown in FIG. Such a striped pattern of the captured image of one frame is generated in the captured image as a horizontal stripe pattern, and each event point projected from the visible light transmitter 1 in the state of occurrence of each horizontal stripe is generated. An ID information signal is included.

  As described above, the mobile terminal 4 includes the camera 10 and is composed of a PDA, a tablet terminal that can be connected to a wireless LAN, or a mobile phone that can be connected to a mobile phone communication network or a wireless LAN. Connected to the Internet INT.

  Further, as shown in FIG. 4, the portable terminal 4 includes a microprocessor 58 as a main part, and includes a storage unit 50 including a RAM and a ROM, and a peripheral interface 53 including an input / output circuit. The portable terminal 4 includes a touch-sensitive display 57 that can perform touch input for various function switch inputs and displays moving images, still images, texts, and the like, a display controller 56 that controls the display 57, and the like.

  Further, the portable terminal 4 includes an RF (Radio Frequency) circuit 54 for connecting to a wireless LAN or a cellular phone communication network, and can be connected to the wireless LAN or the cellular phone communication network through the peripheral interface 53 and the RF circuit 54. It is. The RF circuit 54 includes an antenna system and a tuner, transmits or receives an RF signal, and performs radio wave communication with a wireless LAN access point connected to the Internet INT or a base station BS of a mobile phone communication network. .

  The storage unit 50 of the portable terminal 4 stores browser software, audio reproduction software, visible light reception processing software, and the like in advance. The microprocessor 58 of the portable terminal 4 takes in a transmission data signal (image data) for visible light communication photographed by the camera 10 having the above configuration, calculates an average value of luminance components in the row direction, and further averages them. A differential value is calculated based on the displacement of the average value of the luminance data of each row. The average value of the brightness data indicates the exposure amount of the stripe pattern generated in each row of each pixel of the image sensor 15, and the differential value is calculated based on the displacement of the exposure amount.

  Further, the microprocessor 58 sets a predetermined threshold value for the differential value of the exposure amount, binarizes the differential value of the exposure amount based on the threshold value, extracts a transmission signal received from the binarized data, and transmits it. The signal is demodulated in accordance with the OOK system, and the ID information signal transmitted from the visible light transmitter 1 at each event point is acquired and reproduced or displayed. Moreover, the portable terminal 4 accesses the server 20 triggered by the input of the ID information signal transmitted from the visible light transmitter 1, and maps the map according to the ID information and the participant status information from the server 20. Download content information such as assignments or acquired content such as hints, points, rewards, etc., and display it.

  The portable terminal 4 is provided with an audio circuit 55 for reproducing an audio signal and the display 57 for displaying images and characters. A speaker 52 is connected to the output side of the audio circuit 55, and a speaker 52 is connected to the input side. A microphone 51 is connected. As described above, the microprocessor 58 of the mobile terminal 4 uses the visible light of each event point from the image data including the stripe pattern projected from the light projecting unit 2 of the visible light transmitter 1 photographed by the camera 10. The ID information of the transmitter 1 is extracted and reception processing is performed.

  Then, the microprocessor 58 of the portable terminal 4 displays content information including the content downloaded from the server 20 such as maps, assignments, etc., or acquired content such as hints, points, rewards, etc. on the display 57, and the downloaded content. The audio signal is output to the audio circuit 55 from the audio data of the information. In that case, the audio circuit 55 amplifies the audio signal and drives the speaker 52 to reproduce the audio. The display 57 can also be a touch panel type display. In this case, the operation input of the portable terminal 4 is controlled and input by the touch panel controller.

  As shown in FIG. 1, the server 20 includes a CPU 22 and a storage unit 23 in the main control unit 21, and the CPU 22 performs, for example, a treasure hunting event, a point rally event, and the like based on an operation system and application software stored in advance. Execute various necessary processes.

  The storage unit 23 constitutes the content database, and the storage unit 23 stores content information such as maps and assignments to be given to participants at each event point, or acquired content such as hints, points, and rewards. Remembered.

  Further, the storage unit 23 of the server 20 includes information on events such as treasure hunting events and point rally events, status information of participants participating in the event, ID information of each event point, and information on event points at which each participant has arrived. Etc. are memorized. The input / output control unit 24 of the server 20 has a communication port connected to the Internet INT, and transmits / receives various information signals to / from the Internet INT based on TCP / IP.

  The CPU 22, the input / output control unit 24, the storage unit 23, and the like of the server 20 constitute the content reading unit. When accessed from the mobile terminal 4, the CPU 22 includes the event point ID information and the participant status information. Based on this, content information such as maps, assignments, hints, points, rewards, etc. to be given to event participants is read from the storage unit 23 of the content database.

  The server 20 is provided with database update means for updating the contents of the storage unit 23 serving as a content database, and the database update means updates content in the content database of the storage unit 23 based on the status information of the participants. It can be constituted as follows.

  In the case of a treasure hunt event, as shown in FIG. 8, the visible light transmitter 1 is installed at each event point EV1 to EVn. As shown in FIGS. 2 and 3, the visible light transmitter 1 at each event point has a cylindrical main body case 9, a light projecting portion 2 is provided at the front end of the main body case 9, and a plug 12 is provided at the end. It is formed into a lamp shape. The visible light transmitter 1 is configured to project visible light superimposed with a signal of ID information from the light projecting element 3 of the light projecting unit 2 at the tip of the main body case 9.

  The light projecting unit 2 is provided at the front end of the main body case 9 of the visible light transmitter 1, the plug 12 is provided as an attachment unit and a power input unit at the end, and visible light is transmitted from the light projecting element 3 of the light projecting unit 2. Light is projected and irradiated forward. Such a lamp-type visible light transmitter 1 can be easily installed, for example, in an arbitrary place of a treasure hunting event venue. For example, a plug 12 is connected to a duct rail for a lighting fixture connected to an AC power source. It can be easily fitted and attached via.

  As the light projecting element 3 of the light projecting unit 2, a white light emitting diode is usually used, but a red light emitting diode, a blue light emitting diode, or a green light emitting diode can also be used. When each of these three light emitting diodes is mounted in the light projecting unit 2, the light emitting operation of the light emitting diode for red, blue or green is controlled according to the event point, and the light emitting color is changed to an event. It can be changed according to the point. The light projecting unit 2 has an LED module attached to the center thereof, the front surface of the light projecting unit 2 is covered with a transparent plate, and visible light superimposed with a signal of ID information indicating an event point is forward, for example, 10 to 20 degrees. It is projected in the angle range.

  As shown in FIG. 3, the visible light transmitter 1 includes a light projecting drive circuit 5 that performs a light projecting operation of the light projecting element 3 of the light projecting unit 2, and a subcarrier oscillator that oscillates and outputs, for example, a 28.8 kHz subcarrier. 6, a transmission signal generation unit 7 that generates a transmission signal by modulating a subcarrier with the ID information signal and outputs the transmission signal to the light projecting drive circuit 5, and an ID information storage unit that stores in advance the ID information of the visible light transmitter 1 8. The subcarrier oscillator 6 that oscillates and outputs the subcarrier is a name when the light that is the transmission medium is the main carrier, and is also a carrier oscillator that simply oscillates and outputs the carrier.

  In the visible light transmitter 1, a power supply circuit 11 serving as a power supply for the circuit is accommodated. The power supply circuit 11 includes an AC / DC converter that converts an alternating current power source such as a commercial power source into a direct current of a predetermined voltage, and the alternating current power is supplied from a plug 12 disposed at the end of the main body case 9. The AC / DC converter uses a switching inverter circuit, and can convert AC of a commercial power source into DC 12V DC, for example, with a small circuit.

  The transmission signal generation unit 7 and the ID information storage unit 8 are composed of, for example, a one-chip microcomputer 13, and based on the program data stored in the memory in advance, the subcarrier signal is converted into the ID information of the visible light transmitter 1. Thus, for example, modulation by four-value PPM modulation (pulse position modulation) is performed, and the modulated transmission signal is output to the light projecting drive circuit 5.

  The ID information storage unit 8 is a storage unit that stores ID information (ID information of each visible light transmitter 1) of each event point used in the event management system, and each visible light transmitter 1 is installed. It is also a storage unit for writing ID information for identifying event points. The ID information storage unit 8 can store arbitrary additional information along with the ID information.

  The transmission signal generation unit 7 of the microcomputer 13 creates a data frame, arranges, for example, data of ID information and type information as a payload following a start frame consisting of a preamble and a frame type, and uses CRC (for checking) as an end frame. A data frame of the transmission signal is generated so that a cyclic redundancy code) is arranged.

  Further, the transmission signal generation unit 7 performs four-value PPM modulation on the subcarrier input from the subcarrier oscillator 6 with the data of the data frame, that is, data including the ID information of the device, and outputs an information transmission signal. Configured. The 4-value PPM modulation circuit divides the data to be transmitted into 2-bit units. For example, “00” is “1000”, “01” is “0100”, “10” is “0010”, and “11” is “0001”. As described above, a pulse specifying the position of the code is generated according to the four pieces of 2-bit data, and the subcarrier is modulated with the data pulse. As a result, visible light having a constant illuminance is emitted regardless of the data.

  Note that the transmission signal generation unit 7 performs four-value PPM modulation on the subcarrier with the information transmission signal to generate the transmission signal. However, the transmission signal is generated by performing ASK modulation, FSK modulation, PSK modulation, or the like. Alternatively, the information transmission signal can be pulsed by the baseband method without modulating the carrier wave, and the pulsed transmission signal can be superimposed on the visible light and transmitted.

  The light projecting drive circuit 5 receives the modulated information transmission signal sent from the transmission signal generation unit 7 of the microcomputer 13 and drives the light projecting element 3 of the light projecting unit 2 to project visible light, An information transmission signal is configured to be superimposed on the visible light.

  As described above, the visible light transmitter 1 is configured as a lamp type as shown in FIG. 2. Alternatively, the visible light transmitter 1 may be configured by providing the light projecting unit 2 in a general-purpose lighting fixture. Further, the visible light transmitter 1 can be disposed as a backlight of a display of a digital signage system, for example, or is disposed as a backlight of a lighting device or a display unit that displays and lights in a beverage food vending machine. You can also. Further, the light projecting unit of the visible light transmitter can be constituted by a display device using liquid crystal or organic EL.

  Next, an embodiment in which the event management system configured as described above is applied to a treasure hunting event will be described with reference to FIGS.

  As shown in FIG. 8, in the treasure hunt event, a plurality of event points EV1 to EVn are set in a somewhat wide outdoor area, and the visible light transmitter 1 is installed at each event point EVn. The visible light transmitter 1 is installed so that the visible light projected from the light projecting unit 2 is directed toward the participants who have visited there.

  ID information is set as an identification code of each event point in the visible light transmitter 1 of each event point EV1 to EVn. Prior to holding a treasure hunt event, ID information attached to each event point EV1 to EVn is registered in the storage unit 23 of the server 20, and status information of participants of the treasure hunt event is registered.

  That is, as shown in FIG. 9, first, in step 100, the participant status information (for example, the name of the participant, the telephone number of the participant's mobile terminal 4, the address number) is registered in the storage unit 23. The status information of the participants may be any information as long as the information can identify each participant and the mobile terminal 4. After the event is started, the status information of the participants who participated is registered in the storage unit 23. It doesn't matter.

  Next, in step 110, ID information (identification numbers) of the event points EV <b> 1 to EVn is registered in the storage unit 23. In the treasure hunt event, each participant visits each event point EV1 to EVn in order, and proceeds while acquiring content information necessary for treasure hunt such as a map. Therefore, at each event point EV1 to EVn, the visible light transmitter 1 Thus, the ID information as the position information is transmitted to the portable terminal 4 of the participant who arrived there.

  When the portable terminal 4 captures the ID information at each of the event points EV1 to EVn, the mobile terminal 4 accesses the server 20 as a trigger and sends the ID information and the status information of the participant to the server 20. Content information including content to be added such as maps and assignments, or acquired content such as hints, points, and rewards is downloaded and acquired.

  For this purpose, in step 120, content information such as a map or a problem to be given to the participant to be provided to the participant at each event point EVn is stored in the storage unit 23 and registered. These map information and task information can be characters, images, images with sound, or moving images.

  Furthermore, at step 130, the acquired content such as hints, points, rewards, etc. to be given to the participants at each event point EVn is stored in the storage unit 23 and registered. Acquired contents such as points and rewards can be characters, images, images with sound, or moving images.

  The server 20 is provided with a content generation function as a content generation unit, and is configured to generate content information that is not registered in advance in the storage unit 23 as a content database by the content generation unit and give it to participants. You can also. In this case, the content generation means of the server 20 generates content information using a predetermined algorithm based on the status information of the participant and the answer of the participant, and gives it to the participant.

  When the treasure hunt event is performed and the participant arrives at the event point EV1 of the first start point, the participant uses the camera 10 of the portable terminal 4 to project the visible light transmitter 1 at the event point EV1. The visible light superimposed by the ID information projected from the unit 2 is photographed.

  At this time, as shown in FIG. 10, first, when the camera 10 captures visible light projected from the light projecting unit 2 (step 300), the image sensor 15 has the same pixel for each row. Charges are accumulated at the timing and at the timing at which the pixels in each row are shifted in order for each row, and thereafter, the pixels that have accumulated the charges output pixel signals based on the charges in order from each row. At this time, the image sensor 15 outputs a pixel signal based on the electric charge exposed and accumulated in the pixels for each row through the pixel amplifier.

  Thereby, the exposure for each row is performed in all the pixels of the image sensor 15, and when the ID information is superimposed on the visible light projected from the visible light transmitter 1, there is a temporal contrast. Brightness and darkness along the row direction occur in the pixel signal including the ID information. That is, a striped pattern appears in the captured image of the image sensor 15 according to the change in the exposure amount of each pixel, and the striped pattern occurs in the row direction of the image sensor 15. When the frequency of the information signal transmitted from the visible light transmitter 1 is, for example, 5 KHz, a 5 Kbps transmission pulse signal is superimposed on the visible light and projected from the light projecting unit 2. The time for one sample of the transmission pulse signal is about 0.5 ms, and the brightness change of the visible light including this transmission pulse signal occurs in the captured image as shown in FIG. This occurs in the pixel row direction.

  The pixel signal including such a stripe pattern is converted into a digital signal by the AD converter 18, the converted digital signal is sent to the image processing LSI, and the image processing LSI 19 takes in the pixel signal for one frame (step 310), Image processing for extracting luminance information contained therein is performed.

  When the image processing LSI 19 captures a digital image signal including color information and luminance information, the image processing LSI 19 extracts only the luminance information and converts it into, for example, grayscale data of 0 to 255 gradations. The extracted data is sent to the microprocessor 58 (step 320). Note that when the image sensor 15 is not for color photography but for monochrome photography, gray scale conversion is not necessary.

  Next, when the extracted data of the striped pattern component included in the captured visible light is captured, the microprocessor 58 calculates the average value of the luminance component in each row direction (step 330). The average value of the luminance component in each row direction is a portion where a striped pattern occurs, and varies greatly according to the horizontal axis (time axis) in each row direction. Next, the microprocessor 58 calculates a differential value from the difference between the averaged luminance data of each row, that is, the average value of the exposure amount signal of each row (step 340).

  For example, as shown in FIG. 7, when visible light includes a transmission pulse signal (visible light transmission signal) SP having a pulse width Tp and is transmitted by visible light, and the visible light is captured by the imaging element 11, The pixel exposure amount increases as the transmission pulse signal SP is included in the exposure period Tx of each row, and the captured image becomes brighter. As a result of the exposure amount changing according to the transmission pulse signal SP, a striped pattern appears in the captured image, and the transmission pulse signal SP can be extracted from the exposure amount of the pixels in each row of the image sensor 15.

  For this reason, in the visible light reception process, as in step 340, the luminance data of each row, that is, the average value of the exposure amount is differentiated with respect to time to calculate a differential value. The differential value of the exposure amount is the difference between the exposure amounts in the preceding and subsequent exposure periods, and a graph of the differential value is generated in the period of the pulse width Tp of the transmission pulse signal as shown in the lower part of FIG. After that, a waveform in which a negative pulse P2 is generated is obtained during the exposure amount decrease period.

  Since the waveform of the differential value of the exposure amount indicates a pulse waveform corresponding to the pulse of the transmission pulse signal, in step 350, a threshold is set at a predetermined level with respect to the differential value. Thereby, the differential value data is binarized and information on the transmission pulse signal corresponding to the positive pulse P1 is extracted.

  As shown in FIG. 7, when the exposure time Tx and the pulse interval (pulse period) Tp of the transmission pulse signal are the same, the waveform of the differential value of the exposure amount is a positive pulse generated at the timing of the previous transmission pulse. A negative pulse P2 corresponding to P1 and a positive pulse P3 generated at the timing of the next transmission pulse are generated simultaneously. When such a phenomenon occurs, the pulse P3 of the differential waveform is canceled and the transmission pulse signal cannot be accurately detected. In order to solve such a problem, the pulse width of the visible light transmission signal is shorter than the exposure time at the time of imaging, and the pulse interval Tp and the exposure time Tx of the visible light transmission signal may be set differently.

  Further, as shown in FIG. 7, even when the pulse interval (pulse period) Tp of the transmission pulse signal is shorter than the exposure time Tx, positive and negative pulses are not generated simultaneously in the differential waveform of the differential value of the exposure amount. 7 is set, the positive pulses P1 and P3 in FIG. 7 are not canceled, and the received transmission pulse signal can be accurately extracted. Therefore, by adopting a method of calculating a differential value of the exposure amount and extracting the transmission pulse signal, the transmission speed of the visible light transmission signal can be increased regardless of the exposure time of the camera.

  Next, the microprocessor 58 extracts, for example, an OOK signal (on / off keying modulation signal) from the binarized data binarized as described above (step 360). This OOK signal encodes the original transmission data so as to suppress the flicker of visible light when visible light is projected from the light projecting unit 2 of the visible light transmitter 1. The original transmission data is extracted and the OOK signal is demodulated (step 370). The demodulated OOK signal becomes the ID information projected from the visible light transmitter 1.

  As described above, the camera 10 of the mobile terminal 4 captures the projected visible light using the pixel amplifier sequential output type imaging device 15, thereby charging the pixels in the row at the timing of each row of pixels. A signal based on the electric charge accumulated in each pixel is sequentially output from the pixel amplifier of each pixel at the timing of each pixel, and a striped pattern based on a transmission signal, that is, visible light transmission is taken in the captured image. The striped pattern based on the ID information signal included in the visible light projected from the light projecting unit 2 of the device 1 is generated in the row direction of the pixels, and the transmitted ID information is extracted based on the striped pattern occurrence state. Demodulated.

  In the portable terminal 4, as shown in FIG. 11, when the ID information of the projected event point is acquired by the portable terminal 4 in step 200, the portable terminal 4 is triggered by the base station BS, the cellular phone. Access the server 20 via the communication network and the Internet INT, and transmit the acquired ID information and participant status information (participant's name, phone number of the mobile terminal 4, address number, etc.) to the server 20. (Step 205).

  When the server 20 receives the ID information of the event point EV1 and the status information of the participant, in step 250, the server 20 stores the event point reached by the participant (here, the event point EV1) together with the status information of the participant. Register in the unit 23.

  Next, in step 260, the server 20 transmits content information such as a map and an assignment stored to be given to the participant who has arrived at the event point EV 1 to the portable terminal 4 of the participant. In step 210, when the portable terminal 4 receives information such as a map and an assignment, the portable terminal 4 displays the map and the assignment on the display 57. Participants look for points, roads, directions, etc. to go to next while looking at the map and issues. Further, when there is a problem, the participant inputs an answer for solving the problem to the mobile terminal 4.

  Next, in step 220, the participant operates the portable terminal 4 to transmit an answer for solving the problem to the server 20. When the server 20 receives the answer in step 270, the server 20 determines whether the answer is correct. In the next step 280, if the answer is correct, the server 20 sends a hint to the mobile terminal 4 of the participant. In order to give acquired content such as points and rewards, the acquired content of the participant is registered in the storage unit 23.

  Next, the server 20 transmits the acquired content to the participant's mobile terminal 4 in step 290. In step 230, the mobile terminal 4 receives the acquired content, and when the acquired content is displayed on the display 57, the participant looks at the acquired content such as hints and points displayed on the display 57, and next It will be useful for searching for points to go to.

  Usually, such a treasure hunting event is attended by a large number of participants, and the treasure hunting event is performed while a large number of participants proceed through the event points at their own pace. Communication between the servers 20 is performed between a large number of mobile terminals 4 and the server 20 almost simultaneously using a large number of lines. The participants photograph the projected visible light with the camera 10 of the mobile terminals 4. Therefore, at the event points EV1 to EVn reached by the participants, the treasure hunting event proceeds smoothly in a substantially simultaneous manner.

  Thereafter, Step 200 to Step 290 described above are repeated, and the participant searches for the next event point EV3 while looking at the map of the event point EV2 and the problem sent from the server 20, and considers the problem. When the answer is found, the answer is transmitted from the portable terminal 4 to the server 20, and the answer is a correct answer, the acquired content is transmitted from the server 20 to the portable terminal 4 in the same manner as described above. The participant who has obtained the acquired content further searches for the next event point EV4 and considers the problem to find an answer. In this way, the treasure hunting event is ended when the event finally reaches the goal event point.

  Thus, in the treasure hunt event by the event management system, the ID information of each event point is superimposed on the visible light and transmitted from the visible light transmitter 1 to the mobile terminal 4 of each participant, and the ID information is included in the ID information. In response, that is, according to the event point reached by the participant, the problem solving stage, etc., the content transmitted from the server 20 to the participant's mobile terminal 4 and the map, assignments, etc., or hints through the mobile terminal 4 Content information including acquired content such as points, rewards, etc. is given accurately, quickly and automatically. Thereby, the participant of the event can enjoy the treasure hunting event while viewing the content such as the map sent to the mobile terminal 4. Even for large-scale events with many participants and many event points, appropriate maps, hints, points, rewards, etc. according to each participant and event point can be appropriately and efficiently sent to the participants. Can grant and manage and implement the progress of large-scale events.

  In the above embodiment, the treasure hunting event has been described as an example, but the event management system can also be applied to a point rally event, orienteering, and the like.

  FIG. 12 shows a block configuration of the mobile terminal 4 and the visible light receiver 35 of another embodiment. In this embodiment, a visible light receiver 35 connected to an external terminal of the mobile terminal 4 is used instead of the camera 10. The portable terminal 4 to which the visible light receiver 35 is connected receives the visible light projected from the light projecting unit 2 of the visible light transmitter 1 by the visible light receiver 35 and receives the ID information superimposed on the visible light. Configured to get. In addition, about the structure similar to the said embodiment, such as a structure of the portable terminal 4, the code | symbol same as the above is attached | subjected to FIG. 12, and the description is abbreviate | omitted.

  As shown in FIG. 12, the visible light receiver 35 is connected to the microphone input terminal 49 of the mobile terminal 4. The visible light receiver 35 includes a light receiving unit 37 having a light receiving element and the like, and a light receiving circuit 36 that amplifies and outputs a light reception signal output from the light receiving unit 37. When receiving the visible light projected from the light projecting unit 2 of the visible light transmitter 1, the light receiving unit 37 receives and outputs a light reception signal including ID information superimposed on the visible light. The portable terminal 4 inputs the light reception signal sent from the visible light receiver 35, inputs it to the sampling circuit 59 through the audio circuit 55, converts it into a digital signal, and extracts ID information.

  When the portable terminal 4 constitutes the server access means and acquires the ID information of the event point via the visible light receiver 35, the portable terminal 4 accesses the server 20 to obtain the event point ID information and the participant status information. 20 to send.

  When the server 20 inputs the event point ID information and the participant status information, the content information such as a map, an assignment, etc., and a hint are given to the participant based on the participant status information and the event point ID information. The acquired content information such as points and rewards is determined, and the content information and the acquired content information are transmitted to the mobile terminal 4 of the participant.

  As described above, the server 20 has a function for reading information of the content database necessary for the event management system based on the program data stored in advance in the storage unit 23 in the main control unit 21, as shown in FIG. Based on the writing function, ID information registration, participant status information registration function, participant information, and event point information, the content of the acquired content such as maps, assignments, hints, points, rewards, etc. The function of transmitting to the terminal 4 and giving the acquired content to each participant is executed.

  As shown in FIG. 12, the portable terminal 4 is provided with a microphone input terminal 49 on the outside, and a connector 38 protrudes from the visible light receiver 35 as an output terminal of the visible light receiver 35. The visible light receiver 35 is connected by inserting the output connector 38 to the microphone input terminal 49 of the portable terminal 4, and outputs the reception signal of the visible light receiver 35 to the microphone input terminal 49 via the connector 38. Configured as follows.

  The processor 58 of the portable terminal 4 takes in the ID information sent from the visible light receiver 35 through the microphone input terminal 49, samples the audio signal by the sampling circuit 59, and the microprocessor 58 starts the application software. The audio signal is sampled, and for example, a four-value PPM signal obtained therefrom is demodulated to obtain ID information. Further, the mobile terminal 4 accesses the server 20 through the Internet INT using the input of the ID information as a trigger, and transmits the ID information to the server 20.

  As shown in FIG. 12, a microphone input terminal connection type visible light receiver 35 is connected to a microphone input terminal 49 of the portable terminal 4 via a connector 38. Thereby, in the portable terminal 4, for example, the microprocessor 58 demodulates, for example, a four-value PPM signal by software from the received light signal including the ID information input through the microphone input terminal 49 to acquire the ID information. The visible light receiver 35 has a very simple circuit configuration including only the light receiving unit 37 and the light receiving circuit 36, and the visible light receiver 35 as hardware can be extremely miniaturized.

  Furthermore, the existing general-purpose portable terminal provided with the microphone input terminal 49 can be used as it is for the portable terminal 4, and the visible light receiver 35 having a small and simple configuration is connected, and the ID information acquisition process If the application software for performing the above is installed in the portable terminal 4, the portable terminal can be used for the event management system.

  Note that the visible light receiver 35 including the light receiving unit 37 and the light receiving circuit 36 can be configured to be very small, so that it can be easily incorporated in the portable terminal 4. The portable terminal 4 can be provided with a vibration generator. When the visible light receiver 35 receives the visible light projected from the visible light transmitter 1, the portable terminal 4 generates vibration and sound. Alternatively, the display 57 can be configured to perform blinking indicating light reception.

  When a treasure hunting event is performed using the event management system configured as described above, a participant of the event carries the portable terminal 4 connected to the visible light receiver 35 and proceeds to the start event point.

  When the participant reaches the first event point EV1 and holds the portable terminal 4 over the visible light of the light projecting unit 2 of the visible light transmitter 1, the visible light receiver 35 of the portable terminal 4 transmits visible light. The visible light irradiated and projected from the light projecting unit 2 of the device 1 is received. When the light receiving unit 37 receives visible light, a received light signal is output through the light receiving circuit 36, and the received light signal is input from the audio circuit 55 to the sampling circuit 59 via the microphone input terminal 49. The sampling circuit 59 converts the analog received light signal into a digital signal, and the microprocessor 58 extracts and acquires the ID information superimposed on the visible light, that is, the ID information of the event point EV1.

  When acquiring the event point ID information in step 200 of FIG. 11, the portable terminal 4 accesses the server 20 with the input of the ID information as a trigger, and in step 205, the ID of the event point EV1 as in the above embodiment. Together with the information, the participant status information is transmitted to the base station BS via the mobile phone communication network, and is transmitted to the server 20 via the Internet INT.

  At this time, when receiving the ID information of the event point EV1 and the status information of the participant, the server 20 registers the event point reached by the participant in the storage unit 23 in step 250.

  Next, in step 260, the server 20 transmits content information such as a map and an assignment stored to be given to the participant at the event point EV1 to the portable terminal 4 of the participant. In step 210, when the portable terminal 4 of the participant receives content information such as a map and an assignment, the portable terminal 4 displays the map and the assignment on the display 57. Participants look for points, roads, directions, etc. to go to next while looking at the map and issues. Further, when there is a problem, the participant inputs an answer for solving the problem to the mobile terminal 4.

  Next, in step 220, the participant operates the portable terminal 4 to transmit an answer for solving the problem to the server 20. When the server 20 receives the answer in step 270, the server 20 determines whether the answer is correct. In the next step 280, if the answer is correct, the server 20 sends a hint to the mobile terminal 4 of the participant. The acquired content is registered in the storage unit 23 so as to give acquired content such as points and rewards.

  Next, the server 20 transmits the acquired content to the participant's mobile terminal 4 in step 290. In step 230, the participant's mobile terminal 4 receives the acquired content, and when the acquired content is displayed on the display 57, the participant looks at the acquired content displayed on the display 57, and obtains hints, points, and the like. Recognize that the acquired content has been acquired, and use the acquired content for treasure hunting.

  As described above, at each event point EV1 to EVn, a participant who has been given a map and obtained acquired content searches the next event point while viewing the map, and proceeds to the next event point EV2 to EVn. If it is possible, the visible light receiver 35 of the portable terminal 4 is held over the visible light transmitter 1 at the event points EV2 to EVn.

  Also at this time, the visible light receiver 35 receives the visible light emitted from the light projecting unit 2 of the visible light transmitter 1 and the received light signal is input to the audio circuit 55 through the microphone input terminal 49 as described above. The received light signal is converted into a digital signal, and the ID information signal of the event point EV2 superimposed thereon is extracted and acquired.

  Then, in step 200, the ID information of the participant along with the ID information of the event point EV2 is transmitted to the base station BS via the mobile phone communication network, and is transmitted to the server 20 via the Internet INT. At this time, when the server 20 receives the ID information of the event point EV1 and the ID information of the participant, the event point (in this case, the event point EV2) reached by the participant with the ID is stored in the storage unit 23 in step 250. sign up.

  Thereafter, steps 210 to 290 are repeated, and the participant searches for the next event point EV3 while looking at the map of the event point EV2 and the problem sent from the server 20, and considers the problem. When the answer is found, the answer is transmitted from the portable terminal 4 to the server 20, and the answer is a correct answer, the acquired content is transmitted from the server 20 to the portable terminal 4 in the same manner as described above. The participant who has obtained the acquired content further searches for the next event point EV4 and considers the problem to find an answer. In this way, the treasure hunting event ends when the event point as the goal is finally reached.

  As described above, when a treasure hunting event is performed using the event management system, the ID information of each event point is transmitted from the light projecting unit 2 of the visible light transmitter 1 while being superimposed on the visible light. When the ID information is captured through the visible light receiver 35 connected to the portable terminal 4, the portable terminal 4 accesses the server 20. Participants can automatically give acquired content such as maps, hints, points, rewards, etc. from the server 20 through the mobile terminal 4 according to the event point, problem solving stage, etc. While viewing content such as a map sent to the mobile terminal 4, it is possible to enjoy an event such as a treasure hunt. Even for large-scale events with many participants and many event points, appropriate maps, hints, points, rewards, etc. according to each participant and event point can be appropriately and efficiently sent to the participants. Can grant and manage and implement the progress of large-scale events.

  In the above embodiment, an example in which the event management system of the present invention is applied to a treasure hunting event has been described. However, the present invention is applied to other events such as a point rally event and an orientation event performed using a mobile terminal and a network. The event management system can also be applied.

DESCRIPTION OF SYMBOLS 1 Visible light transmitter 2 Light projection part 3 Light projection element 4 Portable terminal 5 Light projection drive circuit 6 Subcarrier oscillator 7 Transmission signal generation part 8 ID information memory | storage part 9 Main body case 10 Camera 10a Lens 10b Iris 11 Power supply circuit 12 Plug 13 Microcomputer 15 Image sensor 16 Row scanning device 17 Column scanning device 18 AD converter 19 Image processing LSI
20 server 21 main control unit 22 CPU
DESCRIPTION OF SYMBOLS 23 Memory | storage part 24 Input / output control part 35 Visible light receiver 36 Light receiving circuit 37 Light receiving part 38 Connector 49 Microphone input terminal 50 Memory | storage part 51 Microphone 52 Speaker 53 Peripheral interface 54 RF circuit 55 Audio circuit 56 Display controller 57 Display 58 Microprocessor 59 Sampling circuit

Claims (7)

Visible light communication is performed between each event point identified by the ID information and the participant's mobile terminal, and according to the ID information of the event point and the status information of the participant, a map, an assignment, a hint, a point, a reward Is an event management system that manages the progress of events such as treasure hunting events and point rally events by giving content information such as
An ID information storage unit that stores the ID information, and a light projecting unit that projects visible light on which the ID information is superimposed, and a visible light transmitting unit installed at an arbitrary event point;
Provided in the portable terminal carried by the event participant and having a pixel amplifier sequential output type imaging device, the visible light projected from the light projecting unit of the visible light transmitting unit is sequentially output by the pixel amplifier. A camera that shoots with an image sensor,
Demodulating means for capturing striped pattern image data obtained from an imaging signal output from the pixel amplifier sequential output type imaging device, and demodulating the ID information superimposed on the visible light based on the image data;
Provided in a server connected to the network, information related to events such as treasure hunting events and point rally events, information related to participants participating in the event, maps to be given to participants, content assigned such as assignments, hints, points, A content database for storing content information including acquired content such as rewards;
Server access means for accessing the server from the mobile terminal when the demodulating means demodulates the ID information, and transmitting the event point ID information and the participant status information demodulated by the demodulating means;
When the server access means accesses the server, based on the ID information of the event point and the status information of the participant, the content to be given to the participant of the event, such as a map, assignments, hints, points, Content reading means for reading content information including acquired content such as rewards from the content database;
Content giving means for sending the content information read from the content database by the content reading means from the server to the participant's mobile terminal and giving the content information to each participant;
An event management system comprising: Visible light communication is performed between each event point identified by the ID information and the participant's mobile terminal, and according to the ID information of the event point and the status information of the participant, a map, an assignment, a hint, a point, a reward Is an event management system that manages the progress of events such as treasure hunting events and point rally events by giving content information such as
An ID information storage unit that stores the ID information, and a light projecting unit that projects visible light on which the ID information is superimposed, and a visible light transmitting unit installed at an arbitrary event point;
A visible light receiver connected to the portable terminal carried by a participant of the event and having a light receiving unit for receiving visible light projected from the light projecting means of the visible light transmitting means;
A demodulating means provided in the portable terminal, for taking in a received light signal output from the visible light receiver and demodulating the ID information superimposed on the visible light from the received light signal;
Provided in a server connected to the network, information related to events such as treasure hunting events and point rally events, information related to participants participating in the event, maps to be given to participants, content assigned such as assignments, hints, points, A content database for storing content information including acquired content such as rewards;
When the visible light receiver receives visible light, the received light signal is captured by the portable terminal, and the ID information is demodulated by the demodulation means, the server is accessed from the portable terminal, and the event point Server access means for transmitting the ID information and the status information of the participants;
When the server access means accesses the server, based on the ID information of the event point and the status information of the participant, the content to be given to the participant of the event, such as a map, assignments, hints, points, Content reading means for reading content information including acquired content such as rewards from the content database;
Content giving means for sending the content information read from the content database by the content reading means from the server to the participant's mobile terminal and giving the content information to each participant;
An event management system comprising:   Content generation means for generating content information that is not registered in the content database is provided in the server, and the content generation means is used for the status information of the participant, the answer of the participant, or the ID information of the event point. 3. The event management system according to claim 1, wherein the content information is generated using a predetermined algorithm and is given to the participant.   The event management system according to claim 1 or 2, wherein the light projecting means of the visible light transmitting means is composed of a lighting fixture for outdoor lighting or indoor lighting.   3. The event management system according to claim 1, wherein the light projecting means of the visible light transmitting means is constituted by a lighting fixture built in a vending machine.   The event management system according to claim 1 or 2, wherein the light projecting means of the visible light transmitting means comprises a display device using liquid crystal or organic EL. The database update means for updating the contents of the content database is provided, and the database update means updates the content in the content database based on the status information of the participants. Event management system.